Statistical Control in the Evaluation of an Asbestos Deposit

CIM Bulletin1966
Robert F. Shurtz Consulting Engineer, Beverley Hills, California
This paper discusses and compares methods of statistical analysis of the information relating to the evaluation of an asbestos deposit. From a study of 10-ft. lengths of drill core, the separate effects of visual evaluation errors were determined, as well as the deviations between evaluators and the deviations produced by a slight displacement in the center lines of the check drill holes. The importance of careful statistical analysis of such information is stressed.
Keywords: Central Limit Theorem, milling, Pacific Asbestos Corporation near, standard deviation, variance, CORE, Deposits, Evaluation, Evaluations, Milling, Ore, Value
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